Thermoelastic analysis of functionally graded cylinders reinforced by wavy CNT using a mesh‐free method

Moradi‐Dastjerdi, Rasool; Payganeh, Gholamhassan; Tajdari, Mehdi

doi:10.1002/pc.24183

Cited by 28 publications

(13 citation statements)

References 54 publications

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“…Moradi‐Dastjerdi et al investigated the thermo‐elastic behavior of poly(methyl methacrylate) (PMMA) reinforced with functionally graded carbon nanotubes (FG‐CNT) under thermal and mechanical loadings in an analytical way and using mesh‐free technique. They showed that fillers led to the improvement of thermal and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Mechanical characterization of polycarbonate reinforced with nanoclay and graphene oxide

2019

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In this research, the effect of organic nanoclay (NC) Closite 20A and graphene oxide (GO) on the compressive, tensile, and three-point bending behavior of polycarbonate (PC) nanocomposites is investigated. The nanocomposite samples are prepared based on injection molding and the masterbatch technique is used for better dispersion of filler in the matrix. The NC masterbatch is made of direct method by the twin-screw extruder device and the GO masterbatch by the solvent method. The results showed that the presence of nanoparticles in the composite improves the elastic modulus, flexural modulus, compressive and tensile yield stress. The best weight fractions between the considered values for PC/NC and PC/GO were 1% and 0.6%, respectively. Higher fractions lead to the formation of agglomerate and degradation of the nanocomposite. Additionally, it was found that the volume change in plastic deformation for thermoplastics was considerable and the assumption of non-dependent potential flow for PC nanocomposites was more appropriate. For simulating the mechanical behavior of PC nanocomposite, the extended Drucker-Prager (EDP) material model was designated and its coefficient were determined by minimizing the difference between the force-displacement curves obtained from three-point bending test and predicted from numerical simulation using the surrogate method. POLYM. COMPOS., 40:3947-3959, 2019.

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Section: Introductionmentioning

confidence: 99%

Mechanical characterization of polycarbonate reinforced with nanoclay and graphene oxide

2019

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“…Therefore, the individual volume fractions of the matrix contained in the face sheets of the sandwich panel can be obtained using the following mathematical relation: along the corresponding material axes are evaluated using the common rule of mixture [47,48]: 12 12 (1 )…”

Section: Cnt Gradations and Elastic Propertiesmentioning

confidence: 99%

Thermoelastic Deflection Responses of CNT Reinforced Sandwich Shell Structure using Finite Element Method

2017

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The bending responses of nanotube-reinforced curved sandwich shell panel structure are studied under the influence of the thermomechanical loading. Further, the temperature dependent material properties of the sandwich structure are assumed to evaluate the exact responses. In addition, the face sheets of the sandwich construction are modeled using different grading pattern through the panel thickness. The final form of the equilibrium equation of the deflected sandwich structure obtained by minimising the total potential energy functional. Now, the equation is solved computationally via a suitable computer code (MATLAB) using the novel higher-order kinematics including the finite element method. The constancy and the accuracy of the current finite element solutions are verified by solving a different kind of numerical examples as same as the published examples. The effect of parameters associated with structural stiffness and the flexural behaviour of the nanotube-reinforced curved sandwich structural panel are examined together with the unlike temperature distributions (uniform and linear) and discussed the final conclusions in detail.

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“…Shokri-Oojghaz [24] stud-ied the effect of reinforcing with aggregated CNT on the stress distributions of nanocomposite sandwich cylinders based on finite element method. Temperature effect on the static and dynamic responses of nanocomposite cylinders reinforced with wavy CNT were studied by Moradi-Dastjerdi et al [25][26][27]. Safaei et al [28] analyzed the free vibration of nanocomposite plates with CNTs embedded in amorphous polyethylene.…”

Section: Introductionmentioning

confidence: 99%

Graphene and CNT impact on heat transfer response of nanocomposite cylinders

Behdinan

Moradi‐Dastjerdi

Safaei

et al. 2020

Nanotechnology Reviews

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AbstractReinforcing polymers with nanofillers is an advanced approach to improve and manage the thermal behaviors of polymeric nanocomposite materials. Among the proposed nanofillers, graphene and carbon nanotube (CNT) with superior thermal conductivity are two advanced nanofillers, which have extensively been utilized to enhance the heat transfer responses of host polymeric materials. In this work, the impacts of randomly oriented graphene and CNT to steady state and transient heat transfer behaviors of functionally graded (FG) nanocomposite cylinders have been investigated using an axisymmetric model. Nanocomposite cylinders have been assumed to be under heat fluxes, heat convections or temperatures as different types of thermal boundary conditions. The thermal properties of the resulted nanocomposite materials are estimated by micromechanical model. Moreover, the governing thermal equations of axisymmetric cylinders have been analyzed using a highly consistent and reliable developed mesh-free method. This numerical method predicts temperature fields via MLS shape functions and imposes essential boundary conditions with transformation approach. The effects of nanofiller content and distribution as well as thermal boundary conditions on the heat transfer responses of nanocomposite cylinders are studied. The results indicated that the use of nanofiller resulted in shorter stationary times and higher temperature gradients in FG nanocomposite cylinders. Moreover, the use of graphene in nanocomposites had stronger impact on thermal response than CNT.

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Thermoelastic analysis of functionally graded cylinders reinforced by wavy CNT using a mesh‐free method

Abstract: FIG. 6. (a) Hoop stress, (b) radial stress, (c) radial displacement, and (d) temperature along radial direction for third model of infinite length CNTRC cylinders. [Color figure can be viewed at wileyonlinelibrary.com]

Cited by 28 publications

References 54 publications

Mechanical characterization of polycarbonate reinforced with nanoclay and graphene oxide

Mechanical characterization of polycarbonate reinforced with nanoclay and graphene oxide

Thermoelastic Deflection Responses of CNT Reinforced Sandwich Shell Structure using Finite Element Method

Graphene and CNT impact on heat transfer response of nanocomposite cylinders

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